From https://gstreamer.freedesktop.org/src/gst-plugins-base/gst-plugins-base-1.12.3.tar.xz.sha256sum
sha256 d3d37b8489d37fa0018973d850bd2067b98af335fef2fa543ee7d40359e3cea5 gst-plugins-base-1.12.3.tar.xz
